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  1. Path: sparky!uunet!uunet.ca!geac!r-node!ltrnativ!adammot
  2. From: adammot@ltrnativ.UUCP (Adam Mottershead)
  3. Newsgroups: rec.autos.tech
  4. Subject: Emissions - Help!
  5. Message-ID: <9208151342@ltrnativ.UUCP>
  6. Date: Sat, 15 Aug 92 13:42:45 EDT
  7. News-Software: FSUUCP 1.2 R4
  8. X-Mailer: DigiQR 5.38b
  9. Reply-To: adammot@ltrnativ.UUCP (Adam Mottershead)
  10. Distribution: world
  11. Organization: The All Ter Nah Tive Un Der Groend
  12. Lines: 38
  13.  
  14. I own a '87 5.0L Mustang.  To put it lightly, I am not mechanically inclined
  15. and don't know that much about the inner workings of car.
  16.  
  17. Lately, I have noticed a knocking and banging sounds coming from the car
  18. at certain RPM's.  The best way to describe the sound is that it sounds like
  19. a stone trapped in the exhaust system.  The sound comes from the exhaust system
  20. and not the engine compartment.  Could one of the catalytic convertors need
  21. replacing.
  22.  
  23. Here is a very rough diagram of what the 5.0L exhaust system looks like.
  24.  
  25.                       Headers          Headers
  26.                         \\\\            //// <- From Engine
  27.                          VVV            VVV
  28.                           |              |
  29.                           |              |
  30.                           |              |
  31.                           |              |
  32.                           |              |
  33.                          / \            / \
  34.                          \ /            \ / <- Sound comes from here, is this
  35.                           |              |     the Catalytic Convertor?
  36.                           |              |
  37.                           |              |
  38.                           |              |
  39.                          I I            I I
  40.                          I I            I I <--- Tailpipes
  41.                          I I            I I
  42.  
  43. Well, excuse my ascii graphics.  Oops, I think I forgot an H-pipe in there.
  44.  
  45. --
  46. Adam Mottershead                      |
  47. 39 Havelock Drive                     |
  48. Brampton, Ontario                     |             adammot@ltrnativ.UUCP
  49. Canada, L6W 4K8                       |
  50. +1 416 454 8597                       |
  51.                                                                           --
  52.